What a carpenter should stand behind
When you hire a carpenter in New Zealand, you are not just paying for labour and materials — you are paying for a result that should be fit for purpose, properly finished and safe. A good carpenter should be willing to put their promises in writing, including what they will fix if something goes wrong and for how long.
At minimum, a carpenter’s paperwork should clearly state:
- the scope of work, with enough detail that both sides know what is included - whether the price is fixed, estimated, or subject to variation - what workmanship guarantee is offered, if any - which materials and products are covered by manufacturer warranties - who is responsible for ordering, supplying and installing products - what happens if there are defects after completion - how disputes will be handled
Do not rely on a verbal assurance such as “we always look after our customers”. If it matters, get it in writing before work starts.
Workmanship guarantees: what they are and what they should cover
A workmanship guarantee is a promise from the carpenter that their labour will meet an agreed standard. It is separate from the warranty on a product they install.
A sensible workmanship guarantee should cover issues caused by the carpenter’s own work, such as:
- doors that were hung badly and will not latch properly - uneven or poorly fixed decking boards - skirting, architraves or trims that are gapped, out of line or insecure - cabinetry or shelving that was measured, cut or installed incorrectly - joins, finishing or sealing that are below an acceptable trade standard
The key question is whether the guarantee is practical and meaningful. A “lifetime guarantee” sounds impressive, but ask exactly what it means. Does it cover only labour? Is it transferable if you sell the house? Does it exclude movement, shrinkage or water damage? Does it require the carpenter to come back within a certain timeframe?
A useful workmanship guarantee should state:
- the length of the guarantee period - what defects are covered - what is excluded, such as wear and tear, moisture movement or damage caused by others - how quickly the carpenter will inspect a problem - whether the remedy is repair, replacement or refund of the labour component
In New Zealand, many carpenters will offer a written defect period rather than a flashy “lifetime” promise. For smaller jobs, 12 months is common. For larger projects, some builders or carpentry businesses may offer a longer defect period, but always check the wording closely.
Product warranties: what the manufacturer covers
Product warranties are different from workmanship guarantees. These come from the manufacturer or supplier of the item, such as:
- timber products and joinery - hardware, hinges and handles - decking systems - adhesive, sealant and coating products - prefabricated cabinetry or components
A product warranty usually covers defects in the product itself, not a mistake in installation. For example, if a supplied hinge fails because of a manufacturing fault, the warranty may apply. If the hinge fails because it was installed incorrectly or overloaded, that is usually a workmanship issue.
Before you sign off, ask:
- who is supplying the product - whether the warranty is from the manufacturer, importer or retailer - what proof of purchase is required - whether installation must be done by a qualified installer for the warranty to remain valid - whether the warranty is void if the product is painted, modified or used outdoors
Keep invoices, batch numbers and product data sheets where possible. If you later need a warranty claim, documentation matters.
The Consumer Guarantees Act and your rights in NZ
The Consumer Guarantees Act 1993 (CGA) is one of the most important protections for homeowners in New Zealand. In many cases, it applies automatically when you hire a carpenter for work done for domestic use.
Under the CGA, services must be:
- carried out with reasonable care and skill - fit for any particular purpose you made known to the carpenter - completed within a reasonable time, if no timeframe was agreed - provided for a reasonable price, if no price was agreed
This means a carpenter cannot simply opt out of basic legal obligations by saying “no refunds” or “all sales final”. Some businesses try to limit their liability with their own terms, but the CGA can still apply to consumer jobs.
The CGA is not a “bonus” guarantee — it is your baseline protection. If the work is faulty, incomplete or below standard, you may have rights even if the written guarantee is short or unclear.
A key point: if a problem is major, you may be entitled to reject the service or require the issue to be fixed. If the problem is minor, the carpenter is usually given a chance to put it right within a reasonable time.
What counts as faulty carpentry work
Not every snag is a breach, but workmanship should meet an acceptable trade standard. Common examples of faulty carpentry include:
- doors rubbing because they were hung out of square - cabinetry that is visibly out of level or not secured properly - decking that has excessive gaps, poor fixing, or unsafe edges - framing or trim work that does not match the agreed plan - incorrect measurements leading to wasted materials or ill-fitting components - poor finishing that leaves sharp edges, splitting, gaps or visible defects
Normal timber movement can happen in New Zealand’s changing weather, especially with seasonal humidity and temperature shifts. A good carpenter should allow for this in design and installation, rather than blaming every problem on “movement” after the fact.
For exterior work, weather and site conditions matter too. Winter rain and damp conditions can affect drying times, coatings and some timber installations. If your job is weather-sensitive, ask how the carpenter will manage timing and protect the site.
A simple comparison of protection and who is responsible
| Protection type | Who provides it | What it usually covers | Best question to ask | |---|---|---|---| | Workmanship guarantee | The carpenter or their company | Faults caused by the labour or installation | “How long does your workmanship guarantee last, and what exactly does it cover?” | | Product warranty | Manufacturer, supplier or retailer | Defects in the product itself | “Who do I contact if the product fails, and what proof do you need?” | | Consumer Guarantees Act | New Zealand law | Services must be done with reasonable care and skill | “If the work is faulty, how will you make it right?” | | Contract terms | You and the carpenter | Scope, timing, payment, variations, dispute process | “Can you put every key term in the quote or contract?” |
What to check before you hire
Good guarantees are only useful if the carpenter is credible and the paperwork is clear. Before you sign, get at least two or three written quotes and compare more than the price.
Check:
- references or recent local work - written scope of work and exclusions - whether the business has public liability insurance - whether the carpenter uses subcontractors, and who stands behind their work - whether any building work will need consent from your local council - whether the job involves restricted work that must be done by a suitably licensed professional
A carpenter usually does not need a statutory licence in the way some other trades do, but related work may trigger other obligations. For example:
- building work may need consent depending on the project and your council’s rules - electrical work must be done by an appropriately authorised person under the Electrical Workers Registration Board framework - plumbing, gasfitting and drainlaying are restricted work under the Plumbers, Gasfitters and Drainlayers Board
If your carpentry project includes kitchens, bathrooms, decking close to boundaries, alterations to load-bearing elements or attached structures, ask early whether consent or additional trades are needed.
How to document warranties and avoid disputes
The best time to sort out warranty issues is before the job starts.
Ask for the following in writing:
- the full quote, including labour, materials and GST - payment schedule and deposit amount - start and completion dates, or an estimated timeframe - product brands, finishes and model numbers where relevant - workmanship guarantee period and exclusions - who is responsible for repairs during the guarantee period - how defects must be reported - what happens if there is a delay because of weather, supply issues or hidden damage
It also helps to take photos before, during and after the job. If a problem appears later, clear records make it easier to show what changed and when.
What to do if the carpentry work is faulty
If you think the work is faulty, act promptly and keep everything in writing.
1. **Inspect and document the issue** Take dated photos, videos and notes. If relevant, measure gaps, levels or alignment.
2. **Notify the carpenter as soon as possible** Describe the problem clearly and ask for a site visit or written response.
3. **Give them a reasonable chance to fix it** Under the CGA, the business usually gets the opportunity to remedy minor defects.
4. **Keep records of every message** Save emails, texts, invoices, variation orders and photos.
5. **Get an independent opinion if needed** For more serious defects, a different carpenter, building inspector or other relevant expert may help confirm the cause.
6. **Escalate if the issue is not resolved** Options may include a formal complaint, mediation, the Disputes Tribunal, or in some cases the District Court if the amount or complexity warrants it.
If the defect is significant, do not let the original carpenter keep returning without a clear plan. Agree a deadline and a written remedy.
When a warranty claim is not enough
Sometimes homeowners focus on the warranty alone and miss the stronger protection under consumer law. A product warranty may be limited, but the CGA can still apply to the service of installing it.
For example:
- a supplied door closer may be fine, but the installation is faulty - the timber product may be within warranty, but the deck was built without proper clearances - a painted finish may be covered by a product warranty, but the prep work was inadequate
In those situations, the carpenter may be responsible for the labour, even if the product supplier is responsible for the item.
The bottom line for NZ homeowners
A trustworthy carpenter should be clear about three things: their workmanship guarantee, any product warranties, and your rights under the Consumer Guarantees Act. If they are vague, dismissive or reluctant to put promises in writing, treat that as a warning sign.
For best protection, get multiple written quotes, check references, confirm whether consent or other trades are needed, and keep a solid paper trail. Good documentation makes it much easier to resolve a problem fairly if the work does not meet the mark.